Silly rumor? Well you don't really know that do you? There's no rule set in stone that they CANT skip Ivy Bridge - if Haswell is better in every respect why not? Personally I hope they skip IB-E.
Haswell-E will have a DDR4 memory controller. There won't be DDR4 available to purchase in any kind of significant volumes for all of this year. This means that no matter how good Haswell-E is, they cannot skip IVB-E and go straight to it, because the customers would not be able to build working systems.